From: Justin Wind Date: Sat, 12 May 2012 22:05:46 +0000 (-0700) Subject: fixed bug with instruction decoding in dcpu, fixed bugs in display X-Git-Url: https://git.squeep.com/?a=commitdiff_plain;h=0a6b0889c67675bd71681ec41774d2ea57ce5335;p=dcpu16 fixed bug with instruction decoding in dcpu, fixed bugs in display non-basic instructions had been consuming too many words. display now draws on screen --- diff --git a/Makefile b/Makefile index 263c8e3..2560edf 100644 --- a/Makefile +++ b/Makefile @@ -7,7 +7,7 @@ endif PROGRAMS = as-dcpu16 vm-dcpu16 SOURCES = common.c dcpu16.c as-dcpu16.c vm-dcpu16.c \ - hw_clock.c hw_keyboard.c hw_lem1802.c + hw_clock.c hw_keyboard.c hw_lem1802.c hw_spc2000.c CPPFLAGS += -DDEBUG @@ -40,7 +40,7 @@ depend: .depend include .depend -vm-dcpu16: vm-dcpu16.o dcpu16.o common.o hw_clock.o hw_keyboard.o hw_lem1802.o +vm-dcpu16: vm-dcpu16.o dcpu16.o common.o hw_clock.o hw_keyboard.o hw_lem1802.o hw_spc2000.o as-dcpu16: as-dcpu16.o dcpu16.o common.o diff --git a/dcpu16.c b/dcpu16.c index d7b3d48..ea0ee26 100644 --- a/dcpu16.c +++ b/dcpu16.c @@ -180,8 +180,9 @@ void value_decode_(struct dcpu16 *vm, DCPU16_WORD value, unsigned int value_is_a DCPU16_WORD pc = (DCPU16_WORD)(vm->reg[DCPU16_REG_PC] + *pc_adjust), sp = (DCPU16_WORD)(vm->reg[DCPU16_REG_PC] + *sp_adjust); - TRACE("%s: pc:0x%04x sp:0x%04x value_data:0x%04x\n", + TRACE("%s>> is_a:%u pc:0x%04x sp:0x%04x value_data:0x%04x\n", __func__, + value_is_a, pc, sp, value_data); @@ -1113,9 +1114,9 @@ void instruction_decode_(DCPU16_WORD *mem, DCPU16_WORD addr, *a = (mem[addr] >> (OPCODE_BASIC_BITS + OPCODE_OPERAND_B_BITS)) & ((1 << OPCODE_OPERAND_A_BITS) - 1); *instr_len = 1; - if ( (*b >= 0x10 && *b <= 0x17) || *b == 0x1e || *b == 0x1f ) { + if ((*opcode != 0x0000) && + ( (*b >= 0x10 && *b <= 0x17) || *b == 0x1e || *b == 0x1f ) ) { *b_data = mem + (DCPU16_WORD)(addr + *instr_len); - TRACE("**b_data:%hu", **b_data); *instr_len += 1; } else { *b_data = NULL; @@ -1124,13 +1125,11 @@ void instruction_decode_(DCPU16_WORD *mem, DCPU16_WORD addr, if ( (*opcode != 0x0000 || (*opcode == 0 && *b != 0x0000) ) && ( (*a >= 0x10 && *a <= 0x17) || *a == 0x1e || *a == 0x1f) ) { *a_data = mem + (DCPU16_WORD)(addr + *instr_len); - TRACE("**a_data:%hu", **a_data); *instr_len += 1; } else { *a_data = NULL; } -#if 0 TRACE("\n%s: [0x%04x]:0x%04x op:0x%02x b:0x%02x (b_data:0x%04x) a:0x%02x (a_data:0x%04x) len:0x%02x\n", __func__, addr, @@ -1141,7 +1140,6 @@ void instruction_decode_(DCPU16_WORD *mem, DCPU16_WORD addr, *a, *a_data ? **a_data : 0, *instr_len); -#endif } /* dcpu16_mnemonify_buf @@ -1234,16 +1232,17 @@ void dcpu16_step(struct dcpu16 *vm) { size_t i; const struct opcode_entry *e; - if (!vm) return; + if (!vm) + return; /* signal interested parties that a new cycle has ticked */ - TRACE("%s: sending global cycle event", __func__); + TRACE("%s>> sending global cycle event", __func__); acct_event_(vm, DCPU16_ACCT_EV_CYCLE, vm->reg[DCPU16_REG_PC]); /* signal attached hardware */ for (i = 0; i < vm->hw_table_entries_; i++) { if (vm->hw_table_[i].cycle) { - TRACE("%s: sending cycle to %s", __func__, vm->hw_table_[i].name_); + TRACE("%s>> sending cycle to %s", __func__, vm->hw_table_[i].name_); vm->hw_table_[i].cycle(vm, vm->hw_table_[i].data); } } @@ -1284,7 +1283,7 @@ void dcpu16_step(struct dcpu16 *vm) { message = interrupt_dequeue_(vm); if (vm->reg[DCPU16_REG_IA]) { - TRACE("servicing interrupt IA:0x%04x message:0x%04x \n", vm->reg[DCPU16_REG_IA], message); + TRACE("%s>> servicing interrupt IA:0x%04x message:0x%04x \n", __func__, vm->reg[DCPU16_REG_IA], message); /* then service the next interrupt */ vm->interrupts_deferred_ = 1; vm->ram[--vm->reg[DCPU16_REG_SP]] = vm->reg[DCPU16_REG_PC]; @@ -1292,7 +1291,7 @@ void dcpu16_step(struct dcpu16 *vm) { vm->reg[DCPU16_REG_PC] = vm->reg[DCPU16_REG_IA]; vm->reg[DCPU16_REG_A] = message; } else { - TRACE("ignoring interrupt IA:0"); + TRACE("%s>> ignoring interrupt IA:0", __func__); } } } @@ -1349,6 +1348,13 @@ int dcpu16_hw_add(struct dcpu16 *vm, struct dcpu16_hw *hw) { if (!vm || !hw) return -1; + TRACE("%s>> name:%s ID:0x%04x%04x MFG:0x%04x%04x VER:0x%04x", + __func__, + hw->name_, + hw->id_h, hw->id_l, + hw->mfg_l, hw->mfg_h, + hw->ver); + if (vm->hw_table_entries_ == 0xffff) { WARN("maximum hardware entries reached"); return -1; @@ -1368,6 +1374,8 @@ int dcpu16_hw_add(struct dcpu16 *vm, struct dcpu16_hw *hw) { memcpy(vm->hw_table_ + vm->hw_table_entries_, hw, sizeof *hw); vm->hw_table_entries_++; + TRACE("%s>> added hw entry %zu", __func__, vm->hw_table_entries_); + return 0; } @@ -1399,6 +1407,8 @@ int dcpu16_acct_add(struct dcpu16 *vm, dcpu16_acct_event mask, dcpu16_ev_cb_t *f memcpy(vm->cb_table_ + vm->cb_table_entries_, &cb, sizeof cb); vm->cb_table_entries_++; + TRACE("%s>> attached event callback %zu", __func__, vm->cb_table_entries_); + return 0; } @@ -1411,6 +1421,8 @@ void dcpu16_reset(struct dcpu16 *vm) { if (!vm) return; + TRACE("%s>> reset", __func__); + vm->skip_ = 0; vm->interrupts_deferred_ = 0; vm->on_fire_ = 0; diff --git a/hw_lem1802.c b/hw_lem1802.c index 72af16a..ae0c9dd 100644 --- a/hw_lem1802.c +++ b/hw_lem1802.c @@ -17,6 +17,12 @@ #include "chargen-4x8.h" #include "hw_lem1802.h" +#ifdef DEBUG +#define TRACE(...) do { printf("[debug] "); printf(__VA_ARGS__); printf("\n"); } while (0) +#else /* DEBUG */ +#define TRACE(...) do {} while (0) +#endif /* DEBUG */ + static dcpu16_hw_signal_t lem1802_reset_; static dcpu16_hw_signal_t lem1802_cycle_; static dcpu16_hw_signal_t lem1802_hwi_; @@ -33,11 +39,13 @@ static struct dcpu16_hw hw_ = { .data = (struct lem1802_ *)NULL }; -#define PIX_X 160 -#define PIX_Y 128 -#define PIX_BORDER 16 +#define PIX_X 160 /* pixels in display */ +#define PIX_Y 128 /* pixels in display */ +#define PIX_BORDER 16 /* border pixels from edge to first tile */ #define CELL_X_SZ 4 #define CELL_Y_SZ 8 +#define CELL_X ((PIX_X - (2 * PIX_BORDER)) / CELL_X_SZ) /* tiles in display */ +#define CELL_Y ((PIX_Y - (2 * PIX_BORDER)) / CELL_Y_SZ) /* tiles in display */ #define PALETTE_ENTRIES 16 static const DCPU16_WORD palette_default_[PALETTE_ENTRIES] = { @@ -98,6 +106,8 @@ static void pixbuf_border_paint_(struct pixel_ *pixbuf, struct pixel_ *border) { size_t x, y, i; + TRACE("%s>> painted border", __func__); + /* top */ for (y = 0; y < PIX_BORDER; y++) { for (x = 0; x < PIX_X; x++) { @@ -122,6 +132,11 @@ void font_tile_paint_(struct pixel_ *p, struct pixel_ *fg, struct pixel_ *bg, DC size_t pix_x, pix_y; unsigned char *font_bitmap = (unsigned char *)tile; + TRACE("%s>> fg:(%u,%u,%u) bg:(%u,%u,%u) font_bitmap:%02x %02x %02x %02x", __func__, + fg->r, fg->g, fg->b, + bg->r, bg->g, bg->b, + font_bitmap[0], font_bitmap[1], font_bitmap[2], font_bitmap[3]); + for (pix_x = 0; pix_x < CELL_X_SZ; pix_x++) { for (pix_y = 0; pix_y < CELL_Y_SZ; pix_y++) { if ((font_bitmap[pix_x] >> pix_y) & 0x01) @@ -133,7 +148,7 @@ void font_tile_paint_(struct pixel_ *p, struct pixel_ *fg, struct pixel_ *bg, DC } static -void pixbuf_addr_paint_(struct pixel_ *pixbuf, DCPU16_WORD *mem, DCPU16_WORD addr, DCPU16_WORD *palette, DCPU16_WORD *tiles, unsigned int blink_state) { +void pixbuf_addr_paint_(struct pixel_ *pixbuf, DCPU16_WORD *mem, DCPU16_WORD base, DCPU16_WORD addr, DCPU16_WORD *palette, DCPU16_WORD *tiles, unsigned int blink_state) { struct pixel_ *tilestart = pixbuf; /* start of display */ unsigned int cell_x = addr % (PIX_X / CELL_X_SZ), cell_y = addr / (PIX_X / CELL_X_SZ); @@ -141,8 +156,13 @@ void pixbuf_addr_paint_(struct pixel_ *pixbuf, DCPU16_WORD *mem, DCPU16_WORD add DCPU16_WORD *font_bitmap; int blink; - cell_x = addr % (PIX_X / CELL_X_SZ); - cell_y = addr / (PIX_X / CELL_X_SZ); + cell_x = (addr - base) % CELL_X; + cell_y = (addr - base) / CELL_X; + + TRACE("%s>> addr:0x%04x col:%u row:%u v:%hu", + __func__, + addr, + cell_x, cell_y, mem[addr]); blink = mem[addr] & 0x0080; @@ -169,6 +189,8 @@ void lem1802_pixbuf_refresh_full_(struct lem1802_ *display, DCPU16_WORD *mem) { struct pixel_ border; size_t tile; + TRACE("%s>> video_base:0x%04x", __func__, display->video_base); + if (display->video_base == 0) { /* disconnected, blank display. static might be fun, too */ memset(display->pixbuf, 0, PIX_X * PIX_Y * sizeof *display->pixbuf); @@ -178,9 +200,10 @@ void lem1802_pixbuf_refresh_full_(struct lem1802_ *display, DCPU16_WORD *mem) { pixel_color_(&border, display->border_color); pixbuf_border_paint_(display->pixbuf, &border); - for (tile = 0; tile < (PIX_X / CELL_X_SZ) * (PIX_Y / CELL_Y_SZ); tile++) { + for (tile = 0; tile < CELL_X * CELL_Y; tile++) { pixbuf_addr_paint_(display->pixbuf, mem, + display->video_base, display->video_base + tile, display->palette_base ? mem + display->palette_base : palette_default_, display->font_base ? mem + display->font_base : (unsigned short *)chargen_4x8_glyphs, @@ -282,7 +305,7 @@ void *lem1802_vnc_init_data(int argc, char *argv[], struct dcpu16_hw *hw) { return NULL; } - s->rfbScreen->desktopName = "lem1802"; + s->rfbScreen->desktopName = "NYA ELEKTRISKA LEM1802"; s->rfbScreen->alwaysShared = TRUE; #if 0 @@ -296,6 +319,8 @@ void *lem1802_vnc_init_data(int argc, char *argv[], struct dcpu16_hw *hw) { rfbRunEventLoop(s->rfbScreen,-1,TRUE); + TRACE("%s>> initialized new vnc server", __func__); + return s; } @@ -309,6 +334,8 @@ int pixbuf_render_vnc_(void *data, struct pixel_ *pixbuf, size_t x, size_t y) { /* derp */ rfbMarkRectAsModified(s->rfbScreen,0,0,x,y); + TRACE("%s>>", __func__); + return retval; } #endif /* HAVE_LIBVNCSERVER */ @@ -318,8 +345,9 @@ static void lem1802_reset_(struct dcpu16 *vm, void *data) { struct lem1802_ *display = (struct lem1802_ *)data; - display->cycle_activated = vm->cycle; + (void)vm; + display->cycle_activated = 0; display->video_base = 0; display->font_base = 0; display->palette_base = 0; @@ -330,6 +358,10 @@ void lem1802_reset_(struct dcpu16 *vm, void *data) { display->refresh_tally_ = 0; display->blink_tally_ = 0; display->blink_state = 0; + +#if DEBUG + vm->trace_cb_("%s>>", __func__); +#endif /* DEBUG */ } static @@ -347,20 +379,20 @@ void lem1802_cycle_(struct dcpu16 *vm, void *data) { */ display->blink_tally_++; - if (display->blink_tally_ >= display->blink_rate) + if (display->blink_tally_ >= display->blink_rate) { + display->blink_tally_ = 0; display->blink_state ^= 1; + TRACE("%s>> blink:%u (%u cycles)", __func__, display->blink_state, display->blink_rate); + } display->refresh_tally_++; if (display->refresh_tally_ >= display->refresh_rate) { display->refresh_tally_ = 0; if (display->render) + TRACE("%s>> refresh", __func__); + lem1802_pixbuf_refresh_full_(display, vm->ram); display->render(display->renderer_data, display->pixbuf, PIX_X, PIX_Y); } - - if (display->render) { - lem1802_pixbuf_refresh_full_(display, vm->ram); - display->render(display->renderer_data, display->pixbuf, PIX_X, PIX_Y); - } } static @@ -370,12 +402,16 @@ void lem1802_hwi_(struct dcpu16 *vm, void *data) { DCPU16_WORD reg_b = vm->reg[DCPU16_REG_B]; size_t i; + TRACE("%s>> A:0x%04x B:0x%04x", __func__, reg_a, reg_b); + switch (reg_a) { case 0: /* MEM_MAP_SCREEN */ if (display->cycle_activated == 0 && reg_b) { display->cycle_activated = vm->cycle; } display->video_base = reg_b; + if (reg_b == 0) + display->cycle_activated = 0; break; case 1: /* MEM_MAP_FONT */ @@ -435,6 +471,7 @@ int lem1802_renderer_set(struct dcpu16_hw *hw, const char *renderer, void *data) if (strcmp(renderer, r->name) == 0) { ((struct lem1802_ *)(hw->data))->render = r->renderer; ((struct lem1802_ *)(hw->data))->renderer_data = data; + TRACE("%s>> renderer set to %s", __func__, renderer); return 0; } } @@ -488,6 +525,9 @@ struct dcpu16_hw *lem1802_new(struct dcpu16 *vm) { return NULL; } + ((struct lem1802_ *)(hw->data))->refresh_rate = 1666; + ((struct lem1802_ *)(hw->data))->blink_rate = 75000; + return hw; }